CN202443983U - Solar battery assembly - Google Patents

Solar battery assembly Download PDF

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Publication number
CN202443983U
CN202443983U CN2011205427560U CN201120542756U CN202443983U CN 202443983 U CN202443983 U CN 202443983U CN 2011205427560 U CN2011205427560 U CN 2011205427560U CN 201120542756 U CN201120542756 U CN 201120542756U CN 202443983 U CN202443983 U CN 202443983U
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China
Prior art keywords
eva
glued membrane
thickness
lower floor
assembly
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Expired - Lifetime
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CN2011205427560U
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Chinese (zh)
Inventor
刘国丽
陈道远
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Canadian Solar Inc
Canadian Solar Manufacturing Changshu Inc
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Canadian Solar Manufacturing Changshu Inc
Canadian Solar China Investment Co Ltd
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Publication of CN202443983U publication Critical patent/CN202443983U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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Abstract

A solar battery assembly is disclosed, and comprises glass, a plurality of battery wafers, a back board, an upper-layer EVA glue film arranged between the battery wafers and the glass, and a lower-layer EVA glue film arranged between the battery wafers and the back board, the upper-layer EVA glue film having a thickness greater than that of the lower-layer EVA glue film. Compared with the prior art, the upper-layer EVA glue film of the solar battery assembly has a thickness greater than that of the lower-layer EVA glue film, and the experimental results show that the utilization range of the light reflected to the battery wafers is increased, so that the photoelectric conversion efficiency of the assembly is improved.

Description

Solar module
Technical field
The utility model relates to a kind of solar module, relates in particular to a kind of solar module with Novel EVA adhesive film.
Background technology
Solar cell need carry out the lamination encapsulation earlier and form assembly before being utilized, need usually in the encapsulation process to adopt two-layer EVA glued membrane, and it lays respectively at the both sides up and down of battery sheet; The EVA glued membrane is processed for the high transmission rate material, and it has effect fixing and protection to the battery sheet, simultaneously; Also help protecting backboard, make it avoid uv damage, but the EVA glued membrane also there are some defectives of self; For example, conventional encapsulation EVA glued membrane can produce the two keys of C=C because light and heat is degraded in the use out of doors, makes the glued membrane flavescence; There are data to show; The glued membrane of xanthochromia can make the photoelectric conversion efficiency of assembly reduce greatly, this shows, the EVA glued membrane has important role to the photoelectric conversion efficiency of solar module; How to improve the assembly conversion efficiency, become the very important research topic of current industry through the characteristic of improving the EVA glued membrane.In the prior art; The composition of the EVA glued membrane of the upper and lower both sides of solar battery sheet, thickness all are identical usually; Can make things convenient for processing procedure like this, yet, in actual tests, find; The thickness of upper and lower layer EVA glued membrane has certain influence to the scope of utilizing of assembly internal reflection light, and the upper and lower layer EVA glued membrane that thickness is identical fails to make full use of the reflection ray in the assembly.
The utility model content
The utility model technical problem to be solved provides a kind of solar module, and it has improved the thickness of upper and lower layer EVA glued membrane, with the efficient of further raising assembly.
For solving the problems of the technologies described above; The utility model proposes following technical scheme: a kind of solar module; Comprise glass, some battery sheets, backboard, reach the EVA of the lower floor glued membrane between battery sheet and backboard at the upper strata EVA glued membrane between battery sheet and the glass, the thickness of said upper strata EVA glued membrane is greater than the thickness of the said EVA of lower floor glued membrane.
Further, the thickness of said upper strata EVA glued membrane is 0.45-0.8mm.
Further, said upper strata EVA thickness is 0.55mm.
Further, the said EVA of lower floor film thickness is 0.3-0.45mm.
Further, the said EVA of lower floor film thickness is 0.45mm.
Compared with prior art, the thickness of the upper strata EVA glued membrane of the solar module of the utility model is greater than the thickness of the EVA of lower floor glued membrane, improved the scope of utilizing of light on the reflected back battery sheet, thereby improved the photoelectric conversion efficiency of assembly.
Description of drawings
Fig. 1 (A), (B) are the front view and the cross section views of the utility model solar module.
Fig. 2 is the generalized section of solar module (sample 1) the upper strata EVA glued membrane of prior art to the reflection of incident light situation.
Fig. 3 is the generalized section of the utility model solar module (sample 2) upper strata EVA glued membrane to the reflection of incident light situation.
Fig. 4 is the generalized section of solar module (sample 1) EVA of the lower floor glued membrane of prior art to the reflection of incident light situation.
Fig. 5 is the generalized section of the utility model solar module (sample 2) EVA of lower floor glued membrane to the reflection of incident light situation.
Embodiment
To combine the accompanying drawing of the utility model below, the technical scheme in the utility model preferred embodiment will be carried out clear, complete description.
Shown in Fig. 1 (A), (B); The utility model provides a kind of novel solar battery assembly; It comprises glass 1, upper strata EVA glued membrane 2, battery sheet 3, the EVA of lower floor glued membrane 4 and the TPT backboard 5 that is provided with from top to bottom; In addition, solar module also comprises a terminal box 6, is welded in the busbar 8 of 3 of battery sheets and is coated on the peripheral frame 7 of assembly.
Said upper strata EVA glued membrane 2 and the EVA of lower floor glued membrane 4 all are the materials of transparent high transmission rate.Upper strata EVA glued membrane 2 is used in 1 in the glass of battery sheet 3 and upside, and it is made into high transparent main purpose is the transmitance that increases incident light, is beneficial to the photoelectric conversion efficiency that improves solar battery sheet.And the EVA of lower floor glued membrane 4 is used in battery sheet 3 and 5 of following paranotums mainly are to play protection backboard 5 to end ultraviolet light and reach the crosslinked purpose of component internal storeroom.
The thickness of said upper strata EVA glued membrane is greater than the thickness of the EVA of lower floor glued membrane, and wherein, the thickness of said upper strata EVA glued membrane is 0.45-0.8mm, is best with 0.55mm.The said EVA of lower floor film thickness is 0.3-0.45mm, is best with 0.45mm.
Experiment is done further elaboration to the utility model below; List prior art solar module (sample 1) and the utility model solar module (sample 2) successively; Sample 1,2 is made an experiment and the comparative test result; Illustrate the superiority of the utility model with respect to prior art with this, the thickness of the EVA glued membrane in below setting forth in the utility model solar module is all got optimum value, and promptly EVA glued membrane in upper strata is 0.55mm; The EVA of lower floor glued membrane is 0.45mm, and concrete comparison process is following:
Sample 1:
Shown in Figure 2 is the cross section view of sample 1, more than, lower floor's EVA thickness is 0.50mm and tests, assembly battery sheet class adopts the polycrystalline sheet of 16.8% efficient, battery sheet quantity is 60, and and welding, backboard, terminal box, glass is formed assembly.Wherein, assembly uses 2 layer thicknesses to be the EVA glued membrane of 0.50mm, and the above-mentioned parts of arranging in pairs or groups carry out lamination, make sample 1 at last.
Sample 2:
Shown in Figure 3 is the cross section view of sample 2, more than, lower floor's EVA thickness is respectively 0.55mm and 0.45mm tests, assembly battery sheet class adopts the polycrystalline sheet of 16.8% efficient; Battery sheet quantity is 60, welding, backboard; Terminal box; Glass, the said upper and lower layer EVA glued membrane above-mentioned parts of arranging in pairs or groups carry out lamination, obtain sample 2 at last.
Below in conjunction with diagram, above-mentioned sample 1,2 to be tested respectively, test result is following:
For upper strata EVA glued membrane, like Fig. 3, sample 2 under the identical situation of incident angle of light, the upper strata EVA glued membrane of its 0.55mm thickness through self with the surface reflection of battery sheet after, can fully effectively utilize optical range to be calculated as 0.635mm at last; And sample 1 is under the identical situation of incident angle of light, join shown in Figure 2, the upper strata EVA glued membrane of its 0.50mm thickness through self with the surface reflection of battery sheet after, can fully effectively utilize optical range to be calculated as 0.577mm at last;
For the EVA of lower floor glued membrane, like Fig. 4, sample 2 is under the identical situation of incident angle of light, and the EVA glued membrane of the 0.45mm of its lower floor thickness can fully effectively utilize optical range to be calculated as 0.292mm after the backboard reflection at last; And sample 1 is joined Fig. 5 under the identical situation of incident angle of light, and the EVA glued membrane of the 0.50mm of its lower floor thickness can fully effectively utilize optical range to be calculated as 0.254mm after the backboard reflection at last.
Comprehensive above-mentioned test result; For monolithic battery sheet in the assembly: the thickness upper strata EVA glued membrane of 0.55mm has more 0.058mm than the optical range that the upper strata EVA glued membrane of 0.5mm thickness in the sample 1 is utilized in the sample 2; And the EVA of the lower floor glued membrane of 0.45mm thickness has more 0.038mm than the optical range that lower floor's EVA glued membrane of 0.50mm thickness in the sample 1 is utilized in the sample 2, and total effective light utilizes scope to have more 0.096mm, is example with 60 battery sheets in the assembly; Last whole assembly integral body has improved effective light and has utilized scope to be 5.76mm; The effective optical range of raising that following basis is total is done corresponding power test at last, the concrete contrast as follows:
According to IEC 61215 standards, (AM1.5 spectrum, 25 degree temperature, 1000W/m under the STC condition 2Irradiance), carrying out maximum power measures:
Above-mentioned 2 sample assemblies enumerating are tested according to above-mentioned reference condition, and comparing result is following:
Figure BDA0000123593820000041
Above-mentioned experimental result shows; The solar module of the utility model has adopted the structural design of upper strata EVA film thickness greater than the EVA of lower floor film thickness; Compared to conventional assembly with the equal upper and lower layer EVA glued membrane of thickness; Power gain is promoted obviously, very big realistic meaning is arranged in practical application.The utility model does not have influence basically to the wet electric leakage performance and the ageing resistace of assembly, but total power raising has very big realistic meaning to assembly.
Technology contents of the utility model and technical characterictic have disclosed as above, and the utility model protection range should be not limited to the content that embodiment discloses, and should comprise various replacement and the modifications that do not deviate from the utility model, and is contained by the present patent application claim.

Claims (5)

1. solar module; Comprise glass, some battery sheets, backboard, reach the EVA of the lower floor glued membrane between battery sheet and backboard at the upper strata EVA glued membrane between battery sheet and the glass, it is characterized in that: the thickness of said upper strata EVA glued membrane is greater than the thickness of the said EVA of lower floor glued membrane.
2. solar module according to claim 1 is characterized in that: the thickness of said upper strata EVA glued membrane is 0.45-0.8mm.
3. solar module according to claim 2 is characterized in that: said upper strata EVA thickness is 0.55mm.
4. solar module according to claim 1 is characterized in that: the said EVA of lower floor film thickness is 0.3-0.45mm.
5. solar module according to claim 4 is characterized in that: the said EVA of lower floor film thickness is 0.45mm.
CN2011205427560U 2011-12-22 2011-12-22 Solar battery assembly Expired - Lifetime CN202443983U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205427560U CN202443983U (en) 2011-12-22 2011-12-22 Solar battery assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205427560U CN202443983U (en) 2011-12-22 2011-12-22 Solar battery assembly

Publications (1)

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CN202443983U true CN202443983U (en) 2012-09-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114784136A (en) * 2022-06-23 2022-07-22 浙江晶科能源有限公司 Photovoltaic module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114784136A (en) * 2022-06-23 2022-07-22 浙江晶科能源有限公司 Photovoltaic module
EP4297103A1 (en) * 2022-06-23 2023-12-27 Zhejiang Jinko Solar Co., Ltd. Photovoltaic module

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 215000 199 deer Road, hi tech Development Zone, Jiangsu, Suzhou

Co-patentee after: Changshu Canadian Solar Inc.

Patentee after: Artes sunshine Power Group Co. Ltd.

Address before: 215129 199 deer Road, hi tech Development Zone, Suzhou, Jiangsu, Suzhou

Co-patentee before: Changshu Canadian Solar Inc.

Patentee before: Artes (China) Investment Co., Ltd.

CP03 Change of name, title or address
CP01 Change in the name or title of a patent holder

Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province

Patentee after: Atlas sunshine Power Group Co.,Ltd.

Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd.

Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province

Patentee before: CSI SOLAR POWER GROUP Co.,Ltd.

Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd.

CP01 Change in the name or title of a patent holder
CX01 Expiry of patent term

Granted publication date: 20120919

CX01 Expiry of patent term